Pile hammer



M. SCHALSCHA July 4, 1933.

PILE HAMMER 5 Sheets-Sheet 1 Filed April 2, 1929 r111. Illlll INVENTOR fzo July 4, 1933. M. SCHALSCHA 1,917,066,

FILE HAMMER Filed April 2, 1929 5 Sheets-Sheet 2 VIII/Ill,

3 Z5 g0 36 /0 /7fl ATTORNEY July 4, 1933'v M. SCIHALSCHA .BILE HAMMER I Filed April 2, 1929 s Sheets-Sheet 5 INVENTOR w/M. ATTORNEY rather snugly in the lower end of the frame,

this end is practically closed so that the ham-' mer may be used beneath the surface of water or other liquid to advantage and with effec in recesses 32 and33 in the outer surface of" the frame 10. I v

The lower end of the piston rod 13 is tapered and tits in a similarly shaped bore in the top of the ram 14 and is held thereiniby a suitablekev 34. A round valve rod 35 is similarly fitted into the top ofthe ram and is a solid forging thus increasing its ruggedness. This valve rod along one side is prov1ded w1thlong1tud1nally extending grooves 36 and 37 spaced apart and having a rib 38 therebetween. In the groove 36 there is disposed an'upwardly turned shoulder 39 and in the groove 37 there is disposed a downwardly turned shoulder 40.. These shoulders are disposedalong different vertical levels in their respective grooves. As will be noted from Fi s. 3, 4, 5, 6, the shoulder 39 in the groove 36, whenthe ram is in its lower position, is disposed below a valve rocking arm 41 pro jecting into the groove 36. As the ram moves. upwardlyth-e shoulder 39 knocks this arm 41 out of the way and in sodoing turns the block 42 to which the arm 41 is connected. This block 42 is pinned or otherwise fastened to a spindle 43 (see Fig. 4) extending along across the frame and provided with a bore 44 throughout its entire length and lateral passages 45 for purposes of lubrication as will be hereinafter explained.

i The position of the valve spindle and the arm 41 for. the lower position of the ram is shown in Fig. 5. As the ram moves upwardly the arm 41 is moved out of groove 36 and as this occurs another arm 46 on the same block 42 is moved into the groove 37. Then, when the ram descends, the shoulder 40 in the groove 37 descends, being above the arm 46in. the position shown in Fig. 6, and hits the arm 46and again. rocks the block 42, and moves the arm 41 into position again. The rod 35, the grooves 36 and 3'7, the shoulders 39 and 40 are all formed integrally in one casting so that they cannot lose their relative position and they can be manufactured relatively cheaply.

The end of the valve spindle shown in the lowerportion of Fig. 4 is borne in a bearing bushing 47 mounted on a cap 48 seated and fasten-ed in a recess 49 in the wall of the frame 10'. At the other end of the spindle 43 there is formed in the frame a chamber or valve chest 50 within which is fastened a. ported 54 leading toports 55 and '56 inthe wall of the piston cylinder 11. The valve chamber also connects with anexhaust passage 57 to which an exhaust pipe 58 is connected.

The power fluid is led to the interior of the valve 52, which is hollow, from an inlet pipe 59 fastened to a cap plate 60 fastened against the adjacent face of the frame 10. In the plate, 60' there is formed an oil passage 61 leading at one end to the inlet passage for the power fluid and'at the other end to passage 62 inthe wall of the frame 10. This passage 62 connects to the end of a passage 63 leading to the bottom of an oil reservoir 64. This reservoir is of a capacity to hold a large supplyof oiland the relation of it to the passagesabovementioned is such that the oil will flow by gravity to the capplate 60. me injector actionof the power fluid acting on the. end of the oil passage 61 will drawin the oil therewith and carry it to the various power fluid ports and passages and also through the valve spindle bores so that all the moving parts are, thoroughly lubricated. Tn order to control the flowpf the. oil I have provided an adjustable valvestem screw 65 as shown in Fig. 4 acting as a needle valve in order that the amount of oil flowing can be regulated. Filling and cleaning plugs 66 and 67ers provided. for the oil reservoir.

The top of thepiston cylinder is closed by a cylinder cover68 which can be readily removed for any purpose when desired. This cover is provided with a lifting loop. 69. Intermediate the ,ramframe 10 there are disposed, on opposite sides of the frame, cover. plates 70 and 71 bolted thereto. This permits ready inspection and adjustment of the gland and of the ram and the piston rod, and the valve rod. and their connections when de-' where it is just about to receive an upward impulse from the power fluid entering .the

port- 56. It will be noted however that there is sufiicient space in the cylinder 11 below the port 56 to receive the piston 12 and when the ram 14 is not resting on any work and the power is off, the piston and ram descend until the piston rests in this portion of its-cylinder and the port 56 is above the top of the piston. Consequently, in this position of the piston 12 no matter how much power is applied there can be no reciprocation of the piston 12. This arrangement therefore provides an automatic cut off position when there is no work beneath the hammer. When the ram is in this position and is loweredonto some work, then as the work enters the lower bore to Fig. 2, the piston 12 is in the In contemplating the 'actual operetionqo r i this improved' pil-hamnher, the loop 69 will .-receive aY-cableto su'spendfthe'hannnerLinsfi it able guides over the work, 1 Itis'fthenlowered' i until thehead of the pile i'sfentered,-inthehore 21 in icontact With thecn'p-shape'd-fplztte '22 or-directly inconta ct'with the ra n lt as the case may be,' The'jjfi'a me is gthe'nilowered until the ram is forced} npward slightly or 'the cylinder and "the piston isthus forced up wztrd'until it isfabov'e the portfl56.;. At"this j", tiineif the poweris on the ram commence-ste c operate automatically otherwise; -the poweri If the forrnjshown in Fig; "8jis employed; the ranistrikes thecontactipo'rtion 27 Which whichutime it iwiltstartto operate r d isturned onyand it commences to work;

V fits ovlerthe top of'the twork, fandj inoves l construction: and arugged onesince thefframe. is in 0118131606 "and all the parts ar.e;enclosed slightly to prevent the forcefo flthe.;.-irstrn blow breekinggthebframe 10, v This {makes aytight so'that no Water'can get into the apparatus."

' Nevertheless throiigh-fthe;.nia,nholef covers,

acces'sj can be had to the hinteri'or of thefram cylinder to inspectand rep'airthej p'arts when I desired, and to the top'vo-f the -.piston cy1inder 1 llthrough'the, cover pla e, 68

, AS.th e;p iston 'reclprocetes; 35;,- 'ziio'ne piece forging; operates to flip the rocker ztrmfiZthrough thearins'f il and 4 6',"

" The rain and operation 1 can take: ;p'leeei for, v much longer ftini'egwi thoilt,ettention to 4th oiling since; this action takes pla cent mocallyf v Band proper alinel'nentf The-parts are 'symthe axis of-the rain action. f

- ,rugg'edjidevicefwhich is ;Will operatenntonmtical-ly and without ataction 'hoth above" and below Water tand' which tention for considerable periods zind which will lubricate itself thoroughly forff lo-ng stretches Without replenishment. Balance-of the weightandfloperating parts'willresnlt' in vibrations parts..-

, v ma -tam urting i 'y th guide bar" 28 and thus the ipajrts' tend not to "jarn end are kept durin'g'operati'on'in ,What Icl im as-new.andidesire tog secure; I byiLettersPatent, is"; "ff. I

1; In-e 'pfleharn mer" a one? piece'cast fis '1 I ing having'alignedpowerand-rztmFcyIin-Q h ders, a, piston in, one cylinder, at rem in the '31 other, a; piston rod "connecting [the pistonff end the ra'm,an integralgintervening partia tion between sai'difcylinders and bored tore-y 'ceive said piston} rod, the thickness oftheffl" partition being slibstantially' greaater fthalnu s -that of the piston rod,"r 'emoveble mezns dis- Z posed on' and projectinginivvardlyfrdmjthe yinner'f-face' off thefrarn bylinder, said rain I having 2L gITOO-Ve :td-ifeceivejsaid-I neains 'to f1 guide vthefr'am and,fprei ent tnrningq thereof 7 Q "during reciprocationfthereof, enflanvil plate 'disposeduwithin the"'lgwv ert ;end; ofthe ram i cylinder'havingja." cufpF'shaped' outer; face, inee'nsforsnpportingfthe anvil-plate With-1i i fi h'e 'yl l r' whi' Permi g igh r r f-cipr' ojcation thereof to prevent turning; l1 -f5so'that the valve Spindle isfoscillatedvto c -,11an lp avlng o t t-p nQed -r trol'thev-properaccess;'ofgpoWehflhidTinto the" cylinder lland atthesan e tiinel the oil for lubricating the Varioiispztrts above rnentioned", EJis' Iinjected'a'long with the fiuidj into the I'cylin fder andthe, valvie' lnec hanism'i The: ample 'fcentthe ram '45, I v '2. Inf'a pile-hammerahone piece castinghaving "alingiled-v power and ram cylinders, a "pistonfin one ,c 1inder,+@-:.ram in the other,:

a piston;rodfconnecting the piston and the gram, 21in -integ rel{interveningpartition between setidcylinders andhbored ,toreceive -said, piston rod, thethickn'essi of the "pare- 111 l' tion, heing substantiallyfgr eater' than that; fof "'thewpiston rod, an *anvil'platef'disposed p p WithinftheEfloer endfiofthe rztmi'cylinder .1 'f

*hagy-ing n soupshaped 'oiiter' race, means for] "supporting the "a;nvi l p1 atewithin thefcyl-in der hile *perrnitting ,';slight;i --recipr0cation thereof tojpreventj turning; said anvil plate having ii-contact; portion a djacentjthefram,

, Inn pile ham j'mer a lone ipieceycasting having jaligned power and [ramcylinders itn togdriie heldestri ctive g l I unbalanced v While theie dgsc ibdinygimpiiivnieiitgfin' I 1 p,

d With-respect: to axplreferredif flf I i c b v 1" ifi io s mey-be n eahd theihven on} 1 i nhodiiedqin other f orinj's withoiitdeperting r0111 'the,s pirit andjs :0pe fthe invention in, f. I its broader aspects. Hence I'Yde iretOcOVer I all modifications)'andfforrns coining withinf thezlanguageorsoopeof any one or'morefloff with en integral intervening partition 'th-erev .gfbetweelna piston inone oi saidoylinders-end t a ra'm' 'in the other with an interconnecting pi ton rod;said partition'boredtofre'ceive l said rod lihapving a thickness substantially-f greeter t anthe thickness .03? the piston rod and the pist0n',."sa'i d ranihai ing evertical I groove in its side walls; .i anderemovable bar V QIIIOllhfBd Vertically ofnthe'e'nd wallgof the ram 1 I cylinder ,to he receivedin sai'd groove end 1 30 guide the ram While preventing turning, a cup-shaped anvil plate slidably disposed Within the end of they casting adjacent the ram, a ram contact portion thereon, means for slidably supporting the anvil plate in the casting, said means preventing turning of the anvil plate, said anvil plate fitting substantially snug Within the oasting, and reabove set forth, I aflix my sigantnre hereto.

MAX SCHALSCI-IA. 

